Cheap flights from Ottawa to London Heathrow Airport from C$ 394
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/11. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — LHR
5 Oct — 12 Oct1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Ottawa to London Heathrow are usually found in September or January, booked 54 days in advance, depart on a Wednesday or Saturday and return on a Tuesday
Cheap flight deals from Ottawa to Heathrow
Enter your travel dates to find the best prices.
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Cheapest flights from Ottawa to Heathrow
Explore the most affordable flight options available from Ottawa to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 September 2026.
Sat 10/102:50 p.m. -
1 stop14h 10m
Mon 12/108:30 a.m. -
2 stops34h 28m
Deal found 3/9C$ 743
Sat 26/99:00 p.m. -
Nonstop6h 35m
Mon 19/106:00 a.m. -
2 stops18h 10m
Deal found 1/9C$ 858
Thu 1/106:55 p.m. -
Nonstop6h 35m
Wed 21/1012:40 p.m. -
1 stop11h 10m
Deal found 2/9C$ 859
Thu 1/106:55 p.m. -
Nonstop6h 35m
Thu 8/109:30 a.m. -
Nonstop7h 55m
Deal found 1/9C$ 861
Wed 14/109:00 p.m. -
Nonstop6h 35m
Wed 21/1012:40 p.m. -
1 stop11h 10m
Deal found 3/9C$ 862
Sat 10/109:00 p.m. -
Nonstop6h 35m
Mon 19/102:05 p.m. -
1 stop10h 40m
Deal found 1/9C$ 863
Mon 7/98:50 a.m. -
1 stop31h 10m
Mon 14/99:30 a.m. -
Nonstop7h 55m
Deal found 3/9C$ 865
Mon 21/97:30 p.m. -
1 stop9h 30m
Mon 28/912:40 p.m. -
1 stop24h 45m
Deal found 4/9C$ 866
Fri 25/99:25 p.m. -
1 stop28h 05m
Wed 7/108:40 a.m. -
2 stops37h 30m
Deal found 1/9C$ 870
Best flights from Ottawa to Heathrow
Discover carefully curated flight deals from Ottawa to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.
Mon 28/95:30 p.m. -
1 stop22h 30m
Mon 5/109:30 a.m. -
Nonstop7h 55m
Deal found 5/9C$ 887
Mon 28/95:30 p.m. -
1 stop22h 30m
Tue 6/106:50 a.m. -
2 stops15h 20m
Deal found 5/9C$ 891
Fri 18/96:05 a.m. -
2 stops19h 50m
Mon 21/98:40 a.m. -
2 stops20h 14m
Deal found 4/9C$ 945
Wed 28/106:10 p.m. -
1 stop15h 35m
Mon 2/117:20 p.m. -
1 stop24h 40m
Deal found 1/9C$ 948
Wed 24/25:10 p.m. -
2 stops12h 35m
Wed 3/36:30 a.m. -
2 stops13h 30m
Deal found 1/9C$ 1,046
Tue 22/96:00 a.m. -
3 stops22h 00m
Sat 26/96:50 a.m. -
2 stops17h 05m
Deal found 2/9C$ 952
Fri 6/115:10 p.m. -
2 stops13h 55m
Sun 6/126:30 a.m. -
2 stops13h 30m
Deal found 5/9C$ 1,049
Fri 16/106:01 p.m. -
1 stop10h 19m
Fri 23/104:40 p.m. -
1 stop22h 16m
Deal found 1/9C$ 967
Thu 1/1012:00 p.m. -
2 stops15h 30m
Thu 8/107:45 a.m. -
2 stops21h 09m
Deal found 1/9C$ 978
Wed 23/96:00 a.m. -
3 stops19h 45m
Wed 31/39:30 a.m. -
2 stops19h 12m
Deal found 3/9C$ 1,010
Direct flights from Ottawa to Heathrow
Explore direct flight options from Ottawa to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 5 September 2026.
Wed 14/109:00 p.m. -
Nonstop6h 35m
Wed 21/102:10 p.m. -
Nonstop7h 55m
Deal found 3/9C$ 858
Sat 10/109:00 p.m. -
Nonstop6h 35m
Mon 19/109:30 a.m. -
Nonstop7h 55m
Deal found 1/9C$ 859
Mon 21/96:55 p.m. -
Nonstop6h 35m
Mon 28/99:30 a.m. -
Nonstop7h 55m
Deal found 4/9C$ 861
Thu 1/106:55 p.m. -
Nonstop6h 35m
Wed 21/102:10 p.m. -
Nonstop7h 55m
Deal found 2/9C$ 862
Wed 30/99:00 p.m. -
Nonstop6h 35m
Wed 7/102:10 p.m. -
Nonstop7h 55m
Deal found 1/9C$ 887
Thu 1/106:55 p.m. -
Nonstop6h 35m
Thu 8/109:30 a.m. -
Nonstop7h 55m
Deal found 3/9C$ 888
Wed 16/99:00 p.m. -
Nonstop6h 35m
Wed 30/92:10 p.m. -
Nonstop7h 55m
Deal found 1/9C$ 890
Sat 26/99:00 p.m. -
Nonstop6h 35m
Mon 19/109:30 a.m. -
Nonstop7h 55m
Deal found 1/9C$ 891
Wed 7/109:00 p.m. -
Nonstop6h 35m
Mon 19/109:30 a.m. -
Nonstop7h 55m
Deal found 3/9C$ 892
Mon 28/96:55 p.m. -
Nonstop6h 35m
Mon 19/109:30 a.m. -
Nonstop7h 55m
Deal found 1/9C$ 894
Thu 17/96:55 p.m. -
Nonstop6h 35m
Mon 21/99:30 a.m. -
Nonstop7h 55m
Deal found 1/9C$ 986
Wed 16/99:00 p.m. -
Nonstop6h 35m
Wed 23/92:10 p.m. -
Nonstop7h 55m
Deal found 2/9C$ 1,004
Last-minute flights from Ottawa to Heathrow
Discover last-minute flight deals from Ottawa to Heathrow. Data last updated 5 September 2026 and is based on user searches.
Mon 7/98:50 a.m. -
1 stop31h 10m
Mon 14/99:30 a.m. -
Nonstop7h 55m
Deal found 3/9C$ 865
Mon 21/97:30 p.m. -
1 stop9h 30m
Mon 28/912:40 p.m. -
1 stop24h 45m
Deal found 4/9C$ 866
Fri 25/99:25 p.m. -
1 stop28h 05m
Wed 7/108:40 a.m. -
2 stops37h 30m
Deal found 1/9C$ 870
Sat 26/99:00 p.m. -
Nonstop6h 35m
Mon 19/106:00 a.m. -
2 stops18h 10m
Deal found 1/9C$ 858
Thu 1/106:55 p.m. -
Nonstop6h 35m
Wed 21/1012:40 p.m. -
1 stop11h 10m
Deal found 2/9C$ 859
Thu 1/106:55 p.m. -
Nonstop6h 35m
Thu 8/109:30 a.m. -
Nonstop7h 55m
Deal found 1/9C$ 861
Sat 10/102:50 p.m. -
1 stop14h 10m
Mon 12/108:30 a.m. -
2 stops34h 28m
Deal found 3/9C$ 743
Sat 10/109:00 p.m. -
Nonstop6h 35m
Mon 19/102:05 p.m. -
1 stop10h 40m
Deal found 1/9C$ 863
Wed 14/103:10 p.m. -
1 stop10h 20m
Wed 21/1012:40 p.m. -
1 stop11h 10m
Deal found 3/9C$ 862
One-way flights from Ottawa to Heathrow
Search for one-way flight options from Ottawa to Heathrow. Find affordable one-way fares based on user searches. Data last updated 5 September 2026.
Fri 27/116:10 a.m. -
1 stop25h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 4/9C$ 394
Tue 8/126:10 a.m. -
1 stop25h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 3/9C$ 396
Sun 15/116:10 a.m. -
1 stop25h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 3/9C$ 403
Tue 8/127:00 a.m. -
2 stops24h 50m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 3/9C$ 408
Wed 25/116:10 a.m. -
1 stop25h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 5/9C$ 411
Thu 12/116:10 a.m. -
1 stop25h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 5/9C$ 412
Wed 25/117:00 a.m. -
2 stops24h 50m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 5/9C$ 418
Fri 4/126:55 p.m. -
1 stop36h 55m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 2/9C$ 419
Wed 9/126:55 p.m. -
1 stop36h 55m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 2/9C$ 423
Mon 7/126:55 p.m. -
1 stop36h 55m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 1/9C$ 425
Thu 10/127:00 a.m. -
2 stops24h 50m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 2/9C$ 430
Tue 6/106:25 p.m. -
2 stops15h 35m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 5/9C$ 439
Find flight deals from Ottawa to Heathrow
Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 5 September 2026.
Customize your flight search to find flights from Ottawa to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 5 September 2026.
Use the filters below to find and compare flights from Ottawa to London Heathrow Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest round-trip
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Tue 22/9
4:15 p.m.-12:05 p.m.
1 stop14h 50m
London Heathrow
Wed 31/12
12:00 a.m.-6:00 p.m.
Nonstop0h 00m
C$ 509
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Mon 21/9
2:00 p.m.-8:05 a.m.
2 stops13h 05m
London Heathrow
Wed 31/12
12:00 a.m.-6:00 p.m.
Nonstop0h 00m
C$ 616
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Mon 21/9
10:00 a.m.-10:15 a.m.
1 stop19h 15m
London Heathrow
Wed 31/12
12:00 a.m.-6:00 p.m.
Nonstop0h 00m
C$ 714
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Fri 11/9
8:40 a.m.-6:15 a.m.
1 stop16h 35m
London Heathrow
Wed 31/12
12:00 a.m.-6:00 p.m.
Nonstop0h 00m
C$ 714
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Mon 21/9
2:10 p.m.-10:00 p.m.
3 stops26h 50m
London Heathrow
Wed 31/12
12:00 a.m.-6:00 p.m.
Nonstop0h 00m
C$ 753
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Tue 15/9
7:00 a.m.-10:15 a.m.
1 stop22h 15m
London Heathrow
Wed 31/12
12:00 a.m.-6:00 p.m.
Nonstop0h 00m
C$ 805
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Thu 10/9
6:25 p.m.-2:15 p.m.
3 stops38h 50m
London Heathrow
Wed 31/12
12:00 a.m.-6:00 p.m.
Nonstop0h 00m
C$ 831
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Mon 28/9
5:30 p.m.-9:00 p.m.
1 stop22h 30m
London Heathrow
Mon 5/10
9:30 a.m.-12:25 p.m.
Nonstop7h 55m
C$ 887
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Mon 28/9
5:30 p.m.-9:00 p.m.
1 stop22h 30m
London Heathrow
Tue 6/10
6:50 a.m.-5:10 p.m.
2 stops15h 20m
C$ 891
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Fri 18/9
6:05 a.m.-6:55 a.m.
2 stops19h 50m
London Heathrow
Mon 21/9
8:40 a.m.-11:54 p.m.
2 stops20h 14m
C$ 945
Flights are sorted by cheapest round-trip flights first.
Deals found on 1/9
Showing 1-10 of 19 resultsSorted by cheapest first
1
2
Best time to book a flight from Ottawa to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from Ottawa with our price prediction graph.
YOW-LHR
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ottawa to London Heathrow Airport
Prices
Delays
More
How far ahead should I book a flight from Ottawa to London Heathrow Airport?
The best time to book flights from Ottawa to London Heathrow Airport is 53 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Ottawa to London Heathrow Airport?
Currently, September is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of C$ 978). Flying from Ottawa to London Heathrow Airport in December is currently the most expensive (average of C$ 1,464). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from YOW to LHR?
Find hourly flight availability from Ottawa to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 5 September 2026.
When flying from Ottawa to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How much does it cost to fly round-trip from Ottawa to London Heathrow Airport?
Airfare is below average for this route at the moment.
Ottawa to London Heathrow Airport flights typically cost between C$ 902 and C$ 1,094 in October.The cheapest round-trip price found within the last 5 days was C$ 743 on Lufthansa (10 Oct-12 Oct).
How often are flights from Ottawa to London delayed?
About 30% of weekly flights between Ottawa and London have experienced delays in the past year, with the average delay time being 135 minutes.
What is the most punctual flight time for Ottawa to London flights?
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Ottawa to London flights?
Over the past year, Air Canada has had the lowest number of delays on this route, with just 30% of flights being delayed.
What’s the top layover airport for flights from Ottawa to London Heathrow Airport?
Share of one-stop round-trip flights from Ottawa to London Heathrow Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Montreal (YUL) – chosen by Cheapflights users on 70% of one-stop itineraries from Ottawa to London Heathrow Airport on Cheapflights.
What’s the cheapest layover airport for flights from Ottawa to London Heathrow Airport?
Average round-trip fare for 1-stop flights from Ottawa to London Heathrow Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Montreal (YUL) is the most affordable 1-stop option, with an average round-trip price of C$ 1,009.
What’s the fastest layover option from Ottawa to London Heathrow Airport?
Shortest average travel time for 1-stop one-way flights from Ottawa to London Heathrow Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Montreal (YUL) have the shortest average one-way travel time for 1-stop routes: 9h 20m.
Which airport typically offers the quickest layover for flights from Ottawa to London Heathrow Airport?
Average layover duration for 1-stop one-way flights from Ottawa to London Heathrow Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Paris (CDG) offer the fastest connection on this route, with an average layover time of 1h 36m.
Reviews of airlines servicing Heathrow
Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 5 September 2026.
Read reviews from past customers who have flown Air France,Virgin Atlantic, andAir Canada
from Ottawa to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Always a pleasure to travel with Air France. It might not be up to airline like Qatar or Singapour Airlines but I always find it reassuring flying with Air France.
Always a pleasure to travel with Air France. It might not be up to airline like Qatar or Singapour Airlines but I always find it reassuring flying with Air France.
Always a pleasure to travel with Air France. It might not be up to airline like Qatar or Singapour Airlines but I always find it reassuring flying with Air France.
Always a pleasure to travel with Air France. It might not be up to airline like Qatar or Singapour Airlines but I always find it reassuring flying with Air France.
Always a pleasure to travel with Air France. It might not be up to airline like Qatar or Singapour Airlines but I always find it reassuring flying with Air France.
Related info for your journey
Find useful and relevant information for your journey from Ottawa to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly from for flights from Ottawa to London Heathrow?
Most people fly from Ottawa (YOW) if they book a flight from Ottawa to London Heathrow. On average, Ottawa has 1 outbound flight to London Heathrow per day from 4 airlines. Ottawa is conveniently located just 10.6 km from Ottawa’s city centre.
How long is the flight from Ottawa to London Heathrow Airport?
A quick flight from Ottawa to London Heathrow Airport can take about 21h 05m. Air Canada provides one of the quickest options available for as low as C$ 945. The distance between Ottawa and London Heathrow Airport is about 5343 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from Ottawa to London Heathrow Airport round-trip?
Cheapflights users have booked flights from Ottawa to London Heathrow Airport round-trip from C$ 479. Other airlines that can offer you cheap pricing are Air France, from C$ 770, and Air Canada, from C$ 891. Virgin Atlantic is 57% cheaper than the average price of flights available within the next 90 days to this destination.
What are the most reliable airlines from Ottawa to London Heathrow Airport?
The top 3 most reliable airlines when flying from Ottawa to London Heathrow Airport are Air Canada (38%), Aegean Airlines (38%) and Austrian Airlines (38%).
What are the cheapest flights from Ottawa to London Heathrow Airport?
On average you can expect to pay C$ 1,395 for a flight from Ottawa to London Heathrow Airport. The cheapest flight overall is C$ 893 while the most popular route, (Ottawa - London Heathrow) is currently priced at C$ 743.
Can I find deals for business class flights from Ottawa to Heathrow?
Yes. Cheapflights offers flight deals from Ottawa to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Ottawa to London Heathrow Airport?
Currently, September is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of C$ 978). Flying from Ottawa to London Heathrow Airport in December is currently the most expensive (average of C$ 1,464). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Travelling to a place near London Heathrow Airport?
Book flights to London Heathrow Airport if you plan to visit one of these locations
Gatwick
Romford
Twickenham
Ilford
Bromley
Sutton
Luton
Slough
Marlow
Cobham
Hounslow
Leamington Spa
Northampton
Watford
High Wycombe
Stratford-upon-Avon
Moreton-in-Marsh
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Fly from Ottawa to Heathrow on these airlines
Choose from the following airlines for your flight from Ottawa to Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 5 September 2026.
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 5 September 2026.
Discover the top 4 airlines that operate flights from Ottawa to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 5 September 2026.
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Ottawa to Heathrow?
When you search for this flight from Ottawa to Heathrow, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Ottawa to Heathrow?
Millions of users choose and trust Cheapflights to book the best flight deals from Ottawa to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Ottawa to Heathrow with no change fees?
Yes, we can. To see specific flights from Ottawa to Heathrow with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from Ottawa to Heathrow become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!
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